From 0ee8d21de5274e057a9301447aebcf02b1eca1c0 Mon Sep 17 00:00:00 2001
From: Dmitry Batkovich <dmitry.batkovich@jetbrains.com>
Date: Mon, 25 Nov 2019 11:24:59 +0300
Subject: [PATCH] extract class

GitOrigin-RevId: c1be96c9cad666b6f13669ca485f77e0cc18a775
---
 .../impl/id/IdIndexEntriesExternalizer.java   | 48 +++++++++++++++++++
 .../psi/impl/cache/impl/id/IdIndexImpl.java   | 40 +---------------
 2 files changed, 49 insertions(+), 39 deletions(-)
 create mode 100644 platform/lang-impl/src/com/intellij/psi/impl/cache/impl/id/IdIndexEntriesExternalizer.java

diff --git a/platform/lang-impl/src/com/intellij/psi/impl/cache/impl/id/IdIndexEntriesExternalizer.java b/platform/lang-impl/src/com/intellij/psi/impl/cache/impl/id/IdIndexEntriesExternalizer.java
new file mode 100644
index 000000000000..fa0bb0cbb3e1
--- /dev/null
+++ b/platform/lang-impl/src/com/intellij/psi/impl/cache/impl/id/IdIndexEntriesExternalizer.java
@@ -0,0 +1,48 @@
+// Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+package com.intellij.psi.impl.cache.impl.id;
+
+import com.intellij.openapi.util.ThreadLocalCachedIntArray;
+import com.intellij.util.io.DataExternalizer;
+import com.intellij.util.io.DataInputOutputUtil;
+import org.jetbrains.annotations.NotNull;
+
+import java.io.DataInput;
+import java.io.DataOutput;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+
+class IdIndexEntriesExternalizer implements DataExternalizer<Collection<IdIndexEntry>> {
+  private static final ThreadLocalCachedIntArray spareBufferLocal = new ThreadLocalCachedIntArray();
+
+  @Override
+  public void save(@NotNull DataOutput out, @NotNull Collection<IdIndexEntry> value) throws IOException {
+    int size = value.size();
+    final int[] values = spareBufferLocal.getBuffer(size);
+    int ptr = 0;
+    for(IdIndexEntry ie:value) {
+      values[ptr++] = ie.getWordHashCode();
+    }
+    Arrays.sort(values, 0, size);
+    DataInputOutputUtil.writeINT(out, size);
+    int prev = 0;
+    for(int i = 0; i < size; ++i) {
+      DataInputOutputUtil.writeLONG(out, (long)values[i] - prev);
+      prev = values[i];
+    }
+  }
+
+  @Override
+  public Collection<IdIndexEntry> read(@NotNull DataInput in) throws IOException {
+    int length = DataInputOutputUtil.readINT(in);
+    ArrayList<IdIndexEntry> entries = new ArrayList<>(length);
+    int prev = 0;
+    while(length-- > 0) {
+      final int l = (int)(DataInputOutputUtil.readLONG(in) + prev);
+      entries.add(new IdIndexEntry(l));
+      prev = l;
+    }
+    return entries;
+  }
+}
diff --git a/platform/lang-impl/src/com/intellij/psi/impl/cache/impl/id/IdIndexImpl.java b/platform/lang-impl/src/com/intellij/psi/impl/cache/impl/id/IdIndexImpl.java
index 035c90593b26..e8981bee1d29 100644
--- a/platform/lang-impl/src/com/intellij/psi/impl/cache/impl/id/IdIndexImpl.java
+++ b/platform/lang-impl/src/com/intellij/psi/impl/cache/impl/id/IdIndexImpl.java
@@ -4,22 +4,14 @@ package com.intellij.psi.impl.cache.impl.id;
 import com.intellij.openapi.fileTypes.FileType;
 import com.intellij.openapi.fileTypes.FileTypeRegistry;
 import com.intellij.openapi.util.Comparing;
-import com.intellij.openapi.util.ThreadLocalCachedIntArray;
 import com.intellij.util.indexing.CustomInputsIndexFileBasedIndexExtension;
 import com.intellij.util.io.DataExternalizer;
-import com.intellij.util.io.DataInputOutputUtil;
 import org.jetbrains.annotations.NotNull;
 
-import java.io.DataInput;
-import java.io.DataOutput;
-import java.io.IOException;
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 
 public class IdIndexImpl extends IdIndex implements CustomInputsIndexFileBasedIndexExtension<IdIndexEntry> {
-  private static final ThreadLocalCachedIntArray spareBufferLocal = new ThreadLocalCachedIntArray();
-
   @Override
   public int getVersion() {
     FileType[] types = FileTypeRegistry.getInstance().getRegisteredFileTypes();
@@ -38,36 +30,6 @@ public class IdIndexImpl extends IdIndex implements CustomInputsIndexFileBasedIn
   @NotNull
   @Override
   public DataExternalizer<Collection<IdIndexEntry>> createExternalizer() {
-    return new DataExternalizer<Collection<IdIndexEntry>>() {
-      @Override
-      public void save(@NotNull DataOutput out, @NotNull Collection<IdIndexEntry> value) throws IOException {
-        int size = value.size();
-        final int[] values = spareBufferLocal.getBuffer(size);
-        int ptr = 0;
-        for(IdIndexEntry ie:value) {
-          values[ptr++] = ie.getWordHashCode();
-        }
-        Arrays.sort(values, 0, size);
-        DataInputOutputUtil.writeINT(out, size);
-        int prev = 0;
-        for(int i = 0; i < size; ++i) {
-          DataInputOutputUtil.writeLONG(out, (long)values[i] - prev);
-          prev = values[i];
-        }
-      }
-
-      @Override
-      public Collection<IdIndexEntry> read(@NotNull DataInput in) throws IOException {
-        int length = DataInputOutputUtil.readINT(in);
-        ArrayList<IdIndexEntry> entries = new ArrayList<>(length);
-        int prev = 0;
-        while(length-- > 0) {
-          final int l = (int)(DataInputOutputUtil.readLONG(in) + prev);
-          entries.add(new IdIndexEntry(l));
-          prev = l;
-        }
-        return entries;
-      }
-    };
+    return new IdIndexEntriesExternalizer();
   }
 }